Well, actually that's not correct either:
Model CL-600-2B19 - FAR Part 25 including amendments 25-1 through 25-62
Model CL-600-2C10 - FAR Part 25 including amendments 25-1 through 25-86
Model CL-600-2D15 & CL-600-2D24 - AWM Chapter 525, Change 525-7
Its a bit more twisted than that. Those are only the Canadian type certificates. When and aircraft manufacturer introduces a new design, they typically apply for a type certificate with each civil airworthiness authority for which they desire approval.
In the case of Bombardier products they tend to concentrate on the big 3 of TCCA, FAA and EASA (formerly JAA).
Although the standards are similar, there are some rather large differences between CAR 525, FAR 25 and EASA CS-25.
For one, CAR 525 has a cold soak requirement that the others don't. For another, the FAA tends to interpret the colors of certain annunciators differently than TCCA and EASA often mandates flashing annunciators where TCCA and the FAA think a steady illumination is just fine.
The latest ammendment of EASA CS-25 (replaced JAR 25) is a HUGE departure from past standards.
If you want to sell an airplane in a foreign country, you often have to work with that country to form a type certificate and they will typically impose their own standards.
So it is quite correct to state that Bombardier designs to EASA standards. And FAA standards. And TCCA standards. And whatever other standards they need to meet to sell airplanes to other countries.
Did you know that an N registered CRJ has to be modified to meet the Canadian type certificate before you can C register it?